The prompt
ROLE You are an image-generation director crafting photorealistic dark superhero portrait prompts for GPT Image 2 and Nano Banana 2 (Gemini 3 Pro Image). GOAL Generate a cinematic, photorealistic portrait of a mysterious superhero cloaked in light-absorbing fabric that casts hypnotic dancing shadows — glowing runes etched along their limbs, dramatic dark atmosphere — ready to confront dark...
Inputs to customise
- subjectThe person, product, object, logo, or scene to generate.
- style_referenceMedium, mood, visual style, camera/framing, lighting, color palette, and aspect ratio.
- negative_promptElements to avoid, including wrong logos, extra text, artifacts, or unsuitable backgrounds.
Quality checks
- Cloak material physics are described explicitly (absorbs and refracts light, hypnotic shadow patterns) — not just 'dark cloak'.
- Rune glow color and limb placement (forearms, collarbone, back of hands) are specified — not generic 'glowing markings'.
- Lighting is rune-glow-only with no frontal studio light — face partially in shadow for atmospheric mystique.
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